A-A-50555, COMMERCIAL ITEM DESCRIPTION, PUMPING UNITS, SEWAGE, DUPLEX, CENTRIFUGAL, AUTOMATIC WET-PIT TYPE (5 DEC 1996)

A-A-50555, COMMERCIAL ITEM DESCRIPTION, PUMPING UNITS, SEWAGE, DUPLEX, CENTRIFUGAL, AUTOMATIC WET-PIT TYPE (5 DEC 1996)., This commercial item description covers automatic, electric-motor-driven, duplex, centrifugal, wet-pit type, sewage pumps. Capacities for each pump of the duplex unit range from 50 to 1,500 gallons per minute (gpm) (3.15 to 94.62 liters/see); total dynamic heads range from 10 to 90 feet (3,048 to 27,432 mm). This commercial item description covers pumps intended for use in pumping raw sewage that carries solids from a sump tank or tank into a sewer at a higher level.